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Civil Engineering PE

Category - Material QC

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Which of the following serves as the basic point of reference for the survey of a project?

Centerline
Offset line
Benchmark line
National Geodetic Survey marker

Explanation

Answer: A - The basic point of reference for the survey of a project is the centerline. The elevations of points are established by a network of benchmarks through the use of a known elevation above sea level obtained on a National Geodetic Survey (NGS) marker. NGS markers, if located within the construction area, must be protected from damage.

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Civil Engineering PE

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Civil Engineering PE

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